FIELD: life-saving equipment.
SUBSTANCE: protective screen of gas mask exhalation unit consists of horizontally located cylindrical shell with a round input section and a ring fillet at the input, a flat nozzle formed by the wall located perpendicularly to the shell axes. According to the invention in the internal cavity of the cylindrical shell the membrane is located in the centre of which the exhalation valve is installed; the membrane is designed with a hole in which circular and diametrical ribs are located, and the cylindrical shell and the membrane are made from elastic polymeric material.
EFFECT: decrease of resistance at exhalation, reduction of dimensions and mass of exhalation unit.
2 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| INDIVIDUAL RESPIRATORY PROTECTION MEANS EXHALATION VALVE | 2018 |
|
RU2696755C1 |
| PANORAMIC GAS MASK | 2013 |
|
RU2549339C1 |
| FILTERING HALF-MASK FOR PROTECTION AGAINST AEROSOLS AND DUST | 2013 |
|
RU2550329C2 |
| LIGHT-WEIGHT PROTECTIVE BREATHING APPARATUS | 2006 |
|
RU2321436C2 |
| UNIVERSAL "ARMOURED HELMET GAS MASK" | 2020 |
|
RU2760248C1 |
| PANORAMIC MASK WITH ANNULAR MEMBRANE VALVE | 2008 |
|
RU2377038C1 |
| BREATHING APPARATUS | 2002 |
|
RU2233188C1 |
| VALVE INTERCOM WITH EXHALATION VALVE | 2007 |
|
RU2340374C1 |
| LUNGMOTOR | 1997 |
|
RU2128037C1 |
| PERSONAL PROTECTION APPARATUS | 2021 |
|
RU2777568C1 |
